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C81400 Copper vs. S44660 Stainless Steel

C81400 copper belongs to the copper alloys classification, while S44660 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C81400 copper and the bottom bar is S44660 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 11
20
Poisson's Ratio 0.34
0.27
Rockwell B Hardness 69
88
Shear Modulus, GPa 41
81
Tensile Strength: Ultimate (UTS), MPa 370
660
Tensile Strength: Yield (Proof), MPa 250
510

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1090
1460
Melting Onset (Solidus), °C 1070
1410
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 260
17
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 61
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 33
21
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 2.8
4.3
Embodied Energy, MJ/kg 45
61
Embodied Water, L/kg 310
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
120
Resilience: Unit (Modulus of Resilience), kJ/m3 260
640
Stiffness to Weight: Axial, points 7.3
15
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
24
Strength to Weight: Bending, points 13
22
Thermal Diffusivity, mm2/s 75
4.5
Thermal Shock Resistance, points 13
21

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0.6 to 1.0
25 to 28
Copper (Cu), % 98.4 to 99.38
0
Iron (Fe), % 0
60.4 to 71
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0
1.0 to 3.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.0
Residuals, % 0 to 0.5
0